How the plan builder works
BCSP's blueprint gives each of the four CHST domains a weight. The builder uses those weights as each domain's share of your study time, then works inside the window from your start date to the day before the exam:
- Weights: Hazard and risk identification and control 36.6%; Safety program development, implementation and sustainment 22.5%; Leadership, communication and training 21%; Emergency preparedness, incident investigation and response 19.9%. They total 100%, so no rescaling is needed.
- Weeks = days from start date to exam date ÷ 7, rounded up. A short last week still counts as a week.
- With 3 or more weeks, the last week is a final review across all four domains at the blueprint shares.
- The study weeks before it go to the domains one at a time, heaviest first. Each domain gets weight × study weeks, rounded by the largest-remainder method: everyone gets the whole-number part, then spare weeks go to the largest fractions. Every domain gets at least one week.
- With fewer study weeks than domains, neighbouring domains share a week, grouped so the weeks carry about equal weight.
- Within a domain's weeks, its topics are spread in order, so each week has at least one topic.
- Each week splits the hours you entered: half on learning new material, three tenths on practice questions and a fifth on reviewing what you missed. The review week is practice and review only. A short week is scaled to its days.
- The free 10-question check opens week 1 and week (weeks ÷ 2, rounded down) + 1.
The plan runs up to 52 weeks. Topic labels are our own short paraphrases of what each domain covers. Where a label names an OSHA construction subpart, study it from your own copy of 29 CFR 1926; this page does not reproduce any standard text.
Worked example 1: 10 weeks at 6 hours a week
A candidate starts on Monday 2 November 2026 and sits the CHST on 11 January 2027, studying 6 hours a week. These dates are an example only.
- Days: 70, so 10 weeks. Week 10 is the final review, leaving 9 study weeks.
- Exact week counts: 9 × 0.366 = 3.294, 9 × 0.225 = 2.025, 9 × 0.21 = 1.89, 9 × 0.199 = 1.791. Whole parts give 3, 2, 1 and 1, which is 7 weeks. The two spare weeks go to the largest fractions, 0.89 and 0.791, so the counts are 3, 2, 2 and 2.
- Weeks 1 to 3 are hazard and risk identification and control, weeks 4 and 5 are safety program development, weeks 6 and 7 are leadership, communication and training, and weeks 8 and 9 are emergency preparedness, incident investigation and response.
- The five hazard topics over three weeks: topics 1 and 2 in week 1, 3 and 4 in week 2, topic 5 in week 3.
- Every study week is 6 hours: 3 hours learning, 1 hour 50 minutes of practice questions and 1 hour 10 minutes reviewing misses. The review week is 3 hours 35 minutes of practice and 2 hours 25 minutes of review.
- Share actually given: (3 + 0.366) ÷ 10 = 33.7%, (2 + 0.225) ÷ 10 = 22.3%, (2 + 0.21) ÷ 10 = 22.1% and (2 + 0.199) ÷ 10 = 22.0%. The lighter domains end up above their weights because each needs whole weeks.
- The free check opens week 1 and week 10 ÷ 2 + 1 = week 6.
Worked example 2: three weeks at 8 hours a week
A candidate starts on 2 November 2026 and sits the exam on 23 November 2026, with 8 hours a week.
- Days: 21, so 3 weeks. Week 3 is review, leaving 2 study weeks for 4 domains.
- Two weeks cannot give four domains a week each, so neighbours pair up. Hazard and risk (36.6%) with safety program development (22.5%) sits at 59.1% of the weight; leadership (21%) with emergency preparedness (19.9%) sits at 40.9%. That is the closest split into two runs, so week 1 is the first pair and week 2 the second.
- Each study week is 8 hours: 4 hours learning, 2 hours 25 minutes of practice and 1 hour 35 minutes reviewing. The review week is 4 hours 50 minutes of practice and 3 hours 10 minutes of review.
- The free check opens week 1 and week 3 ÷ 2 rounded down, plus 1, which is week 2.
Using the plan and the checks
The free 10-question check shows which domains are weakest. Take it at the start, put extra time into those domains in their weeks, and compare at the midpoint. The blueprint weights tell you where the points are, and your own scores tell you where you lose them. For a study order built around the OSHA subparts, read the CHST study guide; for the blueprint itself, see the CHST exam outline, and for question practice, the CHST practice test.
What the planner does not do
It does not say how long anyone should study, and it does not predict a result. The hours are yours; the plan only splits them. Equal weight on the page does not mean equal difficulty for you, so adjust after each check. BCSP's current blueprint and candidate information control what the exam covers, and BCSP can change either.
CHST study plan questions
How many weeks should I study for the CHST?
That depends on your exam date, the hours you can give each week and what you already know from the job, so the builder starts from your dates and your hours instead of a fixed number. Enter both and it spreads your own time across the four blueprint domains, then ends with a review week.
Which CHST domain should I study first?
The builder starts with hazard and risk identification and control, because the blueprint gives it the largest weight at 36.6%. If your free check shows a lighter domain scoring much lower, move some of your time there; the weights show where the points are, and your score shows where you lose them.
Is the free 10-question check enough to know if I'm ready?
No. It is a quick read of your weakest domains, not a prediction of your score. Take it in week one to see where to spend extra time, take it again at the midpoint, and move review time to any domain that has not improved. The Toe Board course then adds a lesson for each domain and a full-length timed practice exam.